V-Vocal and Beatscape go away, but Beatscape sounds were kept - rolled into Loops and One Shots. V-Vocal can be obtained again by installing X1 for sure, and I think 8.5.3 had it too.
If your data files were backed up, you might want to also consider recovering any/all custom content from prior releases, such as Project and Track Templates, Drum Maps, etc, as well as old projects.
Some of your old plugins may have been simply placed in a program sub-folder, like VST Plugins, or wherever, and those plugins could be simply pasted back into wherever you want them on the new system. This would not work for any plugins that had an install process that actually created a registry key, but lots of freeware plugins were simply pasted in, so those would allow this approach.
I would suggest keeping any retained 32-bit plugins in a separate folder in Program Files (x86), and then I would suggest creating an additional sub-folder within that folder, 'x32 Plugins for Sonar x64' or whatever you wanted to call it.
I did the above on my system, and as I found particular 32-bit plugins I wanted to keep trying to use in 64-bit Sonar, I would first test them to make sure they would work, and each plugin that I tested and found to work in x64 Sonar was moved into this new sub-folder, and ONLY that sub-folder with the 'certified' plugins was included in the x64 Sonar search path.
Bob Bone